Combined telephone, telegraph, electric-light, and power system.



No. 7l6,302. Patented Dec. 16,1902.

A. McM. STARK.

COMBINED TELEPHONE, TELEGRAPH, ELECTRIC LIGHT, AND POWER SYSTEM.

I (Application filed Ju1y12, 1901.

(No Model.) L

Z0 @Znesses I [71/126 n'ror m: yoams PETERS co, PHOTO-LITHCL. WASHINGTON, 0 :2V

' scribers conductor-wirefin circuit by means scribers return-wire h, to the main returnl the subscribers conductor and return wires Tarts ALEXANDER MOMARTIN STARK, OF TORONTO, CANADA.

COMBINEDTELEPHONE, TELEGRAPH, ELECTRIC-LIGHT, AND POWER SYSTEM.

SPECIFICATION forming part of Letters Patent No. 716,302, dated December 16, 1902.

Application filed July 12,1901- Serial No. 63,119. (No model.)

To all whom, it may concern:

Be it known that I, ALEXANDER MCMARTIN STARK, of the city of Toronto and the county of York and Province of Ontario, Canada, have invented a Combined Communicating, Electric-Light, and Power System; and I hereby declare that the following is a full, clear, and exact description of the same.

The object of this invention is to furnish a subscriber with electric light, power, and communication over the same circuit at the same time. In carrying out this objectI use a powercurrent transmitted over a main power-circuit and distributed at each sub scribers station to the subscribers main circuit to continuously furnish him with current for his lamps, motors, and communication instruments and maintain this powercurrent at'constant tension by storage battery bridged across the main power-circuit between the generator and subscribers sta tions. l

The drawing represents a diagrammatic view of a complete system of distribution.

Like characters of'reference refer to like parts throughoutthe specification and drawing.

(1 represents the generator-station, which may contain any numberofswitchboards, and b b the subscribers stations. Connecting the generator-station with the su bscribers station is a three-wire circuit consisting of two main conductor-wires d d and a main ret urn-wire e. Tapping the main conductor-wire d and leading to the subscribers station 5 is the subof the subscribers return-wire h with the main return-wire e. Connected in parallel with are a series of lamps g and a motor The electric current continuously circuits over the main conductor-wire d to the subscribers conductor-wire f, through the lamps g, subwire 6. Tappingthe subscribers conductorwire f is the telephone conductor-wire 2', leading to the telephone-receiverj, in circuit with the telephonetransmitter 75, which is connected with the su bscribers return-wire h by the telephone return-wire o, and interposed in the circuit between the tap Z and receiver 9' is a resistance m. The telephone-hook r is connected to the line-wire s, leading to the tip t of the plug it, and connectedto the linewire 3 is the conductor-wire a of the signallamp relay 0. The subscribers signaling device w is tapped on the subscribers returnwire it by the wire w, and when the receiver is on the hook r the circuit for the current is established over the line-Wire s from the central station through the hook r, contactpoint q, subscribers signaling device 20, and Wire w" to the main return-wire e. Connected with the condenser conductor-wire p are the wires x and 50, forming the telegraphcircuit, in which is interposed the usual telegraph instruments y. Interposed on the condenser conductor-wire 19, between the telegraph circuit-wires x and as, is a condenser r, the purpose of which is to prevent the interrupted current of the telegraph instrument being transmitted to the receiver of the telephone instrument. When the receiver has been removed from the telephone-hook r, the circuit from the central station is from the tip t of the plug to, line-Wire s, telephonebook 0", contact-point q, condenser conduc' tor-wire p, telephone conductor-wire vi, receiverj, and transmitter to the telephone return-wire 0 and main return-wire e, and also over the telegraph-circuit,the telegraphic messages being received and transmitted over the telephone circuit when the telephonehook is in this position. Asimilar system of circuits is installed in the subscribers station I). v

Bridged on the main power-circuit is a storage battery 2 to aid in maintaining constant pressure of the current as it circuits from the generator to the subscribers stations and to remove the effects of the imperfect commutation of the generator and destroy the individual vibrations of the current by a neutralization of the same.

When a subscriber desires to call the central station, the receiver is removed from the hook T, which then engages the contact-point q and completes the circuit for the current from the tap Z, through the resistance m and condenser and telegraph circuits to the line- Wire 5, relay-conductor a, and relay 0, which it energizes as it passes to the relay returnwire 6', tapped on the return line-wire f, connected to the main return-wire e, the return line-wire f being also connected with the jacket of the plug to.

In the central station is a secondary battery g, the conductor-wire h of which is connected to an armature 11', adapted to be attracted by the relay 0 when energized. Opposed to the armature t" is the contact-point j of the signal-lamp o. The return-wire 7a of the secondary battery g terminates in a contact-point Z, and normally engaging the contact-point Z is the armature m of the signal-lamp o. The return-wire 7c of the secondary battery g is connected with the return line-wire f.

Tapped on the return line-wire f is the return-wire 0 of the secondary relay p, the magnet of which is opposed to the armature m. When the current circuits from line-wire s and relay-conductor ct through the relay 0 to relay return-wire e, return line-wire f, and main return-wire e, the armature t" is attracted to the contact-point j of the lamp 1). The armature m of the lamp being normally in engagement with the contact-point Z of the battery return-wire it, it necessarily follows that when the armature 11 is attracted to the contact-point j the secondary battery g is short-circuited through and lights the signallamp to signal the operator that the subscriber has called. The secondary relay 1) is in circuit with the spring 8 of the jack t by means of a conductor to, and when the tip 2501' the plug to is inserted in the jack t it engages the spring 8 and establishes a circuit for the current from the line-wire s over the spring 3, conductor-Wire u to the secondary relay 19, causing the secondary relay to attract the armature m and break the circuit of the current of the secondary battery through the signal-lamp o, the circuit of the current through the relayp' being completed by means of the secondary relay return-wire o to the return line-wiref and main return-wire 6. When the tip 25 of the plug uis inserted in the jack t of the second subscribers station, it ongages the line-springo in circuit with the linewire 8 and establishes a circuit of the current to the signaling device to, which it continues to operate until the receiver is removed from the telephone-hookr,whenthecircuitthrough the signaling deviceis broken and established through the condenser-circuit to the telephone instruments, telephone return-Wire o, and main return-wire e, the circuit of the current being simultaneously established over the telegraph-circuit bridged on the condensercircuit 29.

The disconnect-lamp w is in circuit with the line return wiref and is fitted with a spring 00, having an insulated tip 2 normally resting against the plug u. When the plug is pulled from its socket and inserted in the jack, the spring as moves against the con tactpoint a in circuit with the line-wire s, the circuit of the current thus being established by means of the line-wire s, contact-point a and spring so, through the disconnect-lamp to. When the circuit of the current has been broken at the subscribers station, the lamp to is extinguished, and the operator is signaled that the calling -subscribers instrument is no longer in use.

In circuit with the conductor-wire h of the secondary battery g is a secondary battery conductor-wire a, fitted with a contact-point 6, adapted when actuated to engage a contact-point c of the branch wire (1 of the linewire 3. In circuit with the return-wire 7c of the secondary battery g is a secondary battery return-wire e, which is also in circuit with the receiver f of the operators instrument. The operators instrument is furnished with two wires g and h, respectively, in circuit with the secondary battery returnwire e and fitted with contact-points 2' and j, respectively. The contact-point 't' is op: posed to the contact-point of a branch wire it in circuit with the line-wire 3, while the contact-point j is opposed to the contactpoint of the branch wire Z in circuit with the return line-wiref. The contact-points t',j, b, and c are shown in their normal position in the drawing and are brought into engagement with the contact-points of the wires and l by the ordinary operatinglever used in telephone-exchanges. The current from generator cis transmitted over the conductor-wires d d to the subscribers stations b b. At the subscribers stations the current continuously passes over the subscribers conductor-wire f, through the electric lamps g and motor 9 to the return-wire h and main return Wire 6. The current through the lamps and motor is not interrupted to any noticeable or appreciable extent by the cutting in of the telephone or telegraph instruments, as hereiuafter described, or, in other words, the circuit of the current from the generator through the lamps and motors is continuous and of a sufficiently high potential to perform the Work required of it. At the tap Z sufficient current is taken off the power-circuit to operate the telephone and telegraph instruments and passes through a resistance m to protect the telephone and telegraph instruments against its high potential. The current circuits continuously from the resistance 122 through the telephone conductor-Wire 2', receiver j, transmitter is, telephone return-wire 0, to the main return-wire e. In the case of the telephone the circuit of the current is constant through the instruments, while in the case of the telegraph instrument the circuit of the current is interrupted until the telephone-hook r engages the contact-point q.

Assuming that subscrib'ers station I) desires to communicate with sub'scribers station I), the receiver is removed from the telephonehook T, when a circuit from the generator at is established over the subscribers conductorwire f, resistance m, condenser and telegraph circuits to the contact-point q, hook r, and

The operline-wire s to the signal-lamp o.

ator at the central station after the lighting i the main return-wire e, putting the operators instrument into communication with the instrument at subscribers station I). The generator-current from subscribers station terminates in the tip tot the plug it, and the operator on being requested to connect subscribers station 12 with subscribers station b" inserts the tipt of the subscribers plug 'u, into the jack t of the subscribers station I).

For the purpose of more clearly explaining this description it is deemed advisable to designate the plug and jacks of subscribers stations-b by the numerals l and 2, respectively, and the plug and jacks of subscribers station I) by the numerals 3 and 4:, respectively.

The plug 1 is inserted in the jack 4, and the circuitof the current is then from the generator a, through the tipt of the plug 1, over the line-spring, line wire telephone hook, through the signaling device, signal returnawire, telephone return-wire of subscribers station 1) to the main return-wire e.

On the removal of the receiver from the telephonehook at subscribers station I) the circuit of the current through the signaling device is broken and is established over the condenser conductor-wire and through the condenser to the telephone instrument and also over the telegraphic circuit and then over the telephone return-wire tothe main return-wire e. The subscriber at station I) is nowin communication with the subscriber at station I), the generator Ct continuing to furnish the current for the operation of the instruments,as well as for the operation of the lamps and motors at both stations. When the plug l is inserted in the jack 4, the calling-subscribers spring w moves against the contact-point a and establishes a circuit from the generator at over the line-wire 8, through the disconnect-lamp w to the line return-wiref, the spring at and contact-point a forming part of the plug-switch. WVhen the generator-circuit from subscribers station I) is broken by the receiver being hung on the telephonehook r at subscribers station I), the circuit through the disconnect-lamp w is broken and the operator is signaled that the instruments are no longer in use, and the plug 1 is then disconnected from the jack 4 and returned to its socket. In the case of the subscriber at station b' desiring to speak to the subscriberat station I) the same modes opercmclt' is put into force, the plug 3 being inserted by the operator into the jack 2. When the line-wire s, hook r, signaling device w, wire w", to the telephone return-wire 0 and main return-wire e, operating the signaling device until the subscriber responds by removing the circuit of the secondary battery is broken through the signaling device and a circuit from the generator a is established by means of the hook r, line-wire s, relay 0, and line ergizing the relay 0 to attract the armature t" to the contact-point j, causing the secondary battery to short-circuit through the lamp 1) and signal the operator that the subscriber has responded. When the'circuit of the current is established through the signal-lamp o, the operator knows that the subscriber has responded and brings the contact-points i and j into engagement with the contactpoints of the branch wires k and Z, establishing the speaking-circuit between the operators and subscribers instruments over the line-wire s and line return-wire f, re spectively. When the contact-points t and j have been brought into engagement with the contact-points of the branch wires k and Z, the current circuits from the generator at over the line-wire 3, through the wires is g", instrument f, wires h Lto the line return-wire f and main return-wire c. When the instruments are no longer in use, the circuit is broken by the contact-points t' and j being disconnected from the contact-points of the wires It" and Z". The operation of the lever which brings the contact-points 1 and j into engagement with the contact-points of the branch wire and l separates the contact-points b and c and interrupts the normal circuit of the current from the secondary battery g to the line-wire s.

As shown in the drawing, there are three sets of jacks for each of the subscribers stations b 1), representing three switchboards, being numbered 5, 6, and 7, respectively. It will be noticed that the line-spring o of each of the jacks is connected with the line-wire s and that the sockets q of the jacks are connected by means of wires 7Z3. The spring m wire 1' When the plug to is removed from its socket, the current circuits by means of the spring m wires 6 and 77, to the sockets q of the jacks of the subscribers station I) on the various switchboards and terminates in the sockets of the jacks. By this means the sockets of all of the jacks of the subscribers stations are furnished with battery-current. When the contact-points t' andj are brought into engagement with the branch wires 7c and Z, a circuit is established between the telephone operators receiver and the socket ot the subscribers jack through the tip of the plug. against the socket q" of the jack the operator can ascertain whether the line is in useor not. It the current above described is in the the receiver from the telephone-hook 1", when return-wire f to the main return-wire 6, en-

is connected with the wires h by means of the By placing the tip of the plug socket of the jacks, it will produce a'metallic- ICC click in the receiver each time the tip of the plug touches the socket of the jack. The contact-springs s of the jacks t are all in circuit with the conductor-wire u in order that 5 the insertion of the tip 25 of the plug it in any one of the jacks will establish the current through the secondary relay 1).

IIaving thus fully described my invention, what I claim as new, and desire'to secure by Letters Patent, is-

1. An electric system for the transmission of power and for communication, consisting of a high-Voltage circuit, a low-Voltage circuit tapped on the high-voltage circuit, and a storage battery interposed on the high-voltage circuit between the source of current and low-voltage circuit, substantially as specified.

2. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a series of lamps or motors operated by the high-voltage circuit, a low-voltage circuit tapped on the high-voltage circuit and a storage battery interposed on the high-voltage circuit between the source of power and low-voltage circuit, substantially as specified.

3. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a series of lamps or motors in circuit with the high-voltage circuit, a low-voltage circuit tapped on the highvoltage circuit, telephone instruments in circuit with the low-voltage circuit and a storage battery interposed on the high-voltage circuit between the source of power and low-voltage circuit, substantially as specified.

4. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a series of lamps or motors in circuit with the high-voltage circuit, a low-voltage circuit tapped on the highvoltage circuit, telegraph instruments in circuit with the low-voltage circuit and a storage battery interposed on the high-voltage circuit between the source of power and lowvoltage circuit, substantially as specified.

5. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a series of lamps or motorsin circuitwith the high-voltage circuit, a low-voltage circuit tapped on the high- Voltage circuit, telegraph and telephone instruments in circuit with the low-voltage circuit and a storage battery interposed on the high-Voltage circuit between the source of power and low-voltage circuit, substantially as specified.

6. In an electric system for the transmission of power and for communication, the combination of an electric-light or power circuit, a telephone-circuit tapped on the electric-light or powercircuit and a choking means interposed on the light and power circuit between the source of power and the telephonecircuit, substantially a specified.

7. In an electric system for the transmissiorr of power and for communication, the

I combination of an electric-light or power circuit, a telegraph-circuit tapped on the electric-light or power circuit and a choking means interposed on the light and power circuit between the source of power and the telegraphcircuit, substantially as specified.

8. In an electric system for the transmission of power and for communication, the combination of an electric-light or power circuit, a telephone-circuit tapped on the electric-light or power circuit, a telegraph-circuit tapped on the telephone-circuit, and a choking means interposed on the light and power circuit between the source of power and the telephone-circuit, substantially as specified.

9. In an electric system for the transmission of power and for communication, the combination of an electric-light or power circuit, a telephone-circuit tapped on the electric-light or power circuit and a storage battery interposed on the electric-light or power circuit between the source of power and the telephone-circuit, substantially as specified.

10. In an electric system for the transmission of power and for communication, the combination of an electric-light or power circuit, a telegraph-circuit tapped on the electric-light or power circuit and a storage battery interposed on the electric-light circuit between the source of power and telegraphcircuit, substantially as specified.

11. In an electric system for the transmission of power and for communication, the combination of an electricrlight or power circuit, a telephone-circuit tapped on the electric-light or power circuit, a telegraph-circuittapped on the telephone-circuit and a storage battery interposed on the electric-light circuit between the source of power and telephonecircuit, substantially as specified.

12. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, electric lamps or motors operated by the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, telephone instruments operated by the low-voltage circuit and a storage battery interposed on the high- Voltage circuit between the low-voltage circuit and source of power, substantially as specified.

13. An electric system for the transmission of power and for communication, consisting, of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit between the low-voltage circuit and main highvoltage circuit, substantially as specified.

14. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motorsin circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high voltage circuit and a. storage battery interposed on the subscribers highvoltage circuit between the low-voltage circuit and source of power, substantially as specified.

15. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, telephone instruments in circuit with the subscribers low-voltage circuit and a storage battery interposed on the subscribers high-voltage circuit between the low-voltage circuit and main high-voltage circuit, substantially as specified.

16. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, electric lamps or motors in circuit withthe subscribers high-voltage circuit, a lowvoltage circuit tapped on the subscribers high-voltage circuit, telegraph instruments in circuit with the low-voltage circuit and a storage battery interposed on the subscribers high-voltage circuit between the low-voltage circuit and the main high-voltage circuit, substantially as specified.

17. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage cir cuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, a telephone instrument in circuit with the low-voltage circuit, a telegraph instrument in circuit with the telephone-instruments circuit and a storage battery interposed on the subscribers high-voltage circuit between the low-voltage circuit and the main high-voltage circuit,

voltage circuit, alow-voltage circuit tapped on the subscribers high-voltage circuit, a tele phone instrument interposed on the low-voltage circuit,a secondary circuit in circuit with the low-voltage circuit and main highwoltage circuit through the telephone instrument, substantially as specified.

20. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, a telephone instrument interposed on the low-voltage circuit, a secondary circuit in circuit with the low-voltage circuit, and main high-voltage circuit,and adapted to be established through the telephone instrument, substantially as specified.

21. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main high- Voltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, a telephone instrument interposed on the low-voltage circuit, a secondary circuit in circuit with the low-voltage circuit and main high-voltage circuit through the subscribers telephone instrument and central station, substantially as specified.

22. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a low-voltage cir cuit tapped on the high-voltage circuit, a storage battery interposed on the high-voltage circuit between the source of power and low-voltage circuit, a subscribers telephone instrument interposed on the low-Voltage circuit, a secondary circuit in circuit With the low-voltage circuit and high-voltage circuit through the subscribers telephone instrument and central station, a signal-lamp, and

a secondary battery adapted to be short-circuited through the signal-lamp by the current flowing through the secondary circuit from the subscribers telephone instrument to the main high-voltage circuit, substantially as specified.

23. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a low-voltage circuit tapped on the high-voltage circuit, a subscribers telephone instrument interposed on thethigh-voltage circuit, acentral station, a secondary circuit in circuit with the low-voltage circuit and high-Voltage circuit through the central station, a storage battery interposed on the high-voltage circuit between the source of power and low-voltage circuit and a signal-lamp operated by the flow of the current through the secondary circuit, substantially as specified.

24:. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highthrough the subscribers telephone instrument and central station,

substantially as specified.

25. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, a subscribers telephone instrument interposed on the lowvoltage circuit, a storage battery interposed on the subscribers high-voltage circuit between thevmain high-voltage circuit and low voltage circuit, a central station, a secondary circuit in circuit with the low-voltage circuit and main high-voltage circuit through the subscribers telephoneinstrument and central station, and a telegraph-circuit tapped on the conductor of the secondary circuit, substantially as specified.

26. An electric system for the transmission of power and for communication, consisting of a main high-voltage circuit, a subscribers high-voltage circuit tapped on the main highvoltage circuit, a series of lamps or motors in circuit with the subscribers high-voltage circuit, a low-voltage circuit tapped on the subscribers high-voltage circuit, a subscribers telephone instrument interposed on the lowvoltage circuit, a storage battery interposed on the subscribers high-voltage circuit between the main high-voltage circuit and lowvoltage circuit, a central station, a secondary circuit in circuit with the low-voltage circuit and main high-voltage circuit through the subscribers telephoneinstrument and central station, a telegraph-circuit tapped on the conductor of the secondary circuit and a condenser interposed on the conductor of the secondary circuit between the terminals of the telegraph-circuit, substantially as specified.

27. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a low-voltage circuit tapped on the high-voltage circuit, a storage battery interposed on the high-voltage circuit between the source of power and the low-voltage circuit, a series of translating devices, lamps or motorsoperated by the high-voltage circuit, telephone instruments in circuit with the low-voltage circuit, a secondary circuit in circuit with the low-voltage circuit and main high-voltage circuit through the telephone instrument and central station, and a telegraphcircuit tapped on the conductor of the secondary circuit; substantially as described.

28. An electric system for the transmission of power and for communication, consisting of a high-voltage circuit, a low-voltage circuit tapped on the high-voltage circuit, and a choking means interposed between the source of current and low-Voltage circuit, substantially as specified.

Toronto, June 26, 1901.

ALEXANDER lllCMARTIN STARK.

In presence of- L. F. BROOK, C. H. RIcHEs. 

